ls medium voltage vacuum contactors · iec 62271 - 106 in kolas certification authority by the new...
TRANSCRIPT
Super Solution
Super Solution
LS Medium Voltage Vacuum Contactors
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Customer satisfaction through quality and service - LS Susol medium voltage vacuum contactorsLS Susol medium voltage vacuum contactors using LS vacuum interrupters manufactured with worldclass technology are type tested in LS PT & T that is accredited high power test lab by worldclass KOLAS.
Contents
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Customer satisfaction through quality and service - LS Susol medium voltage vacuum contactors
Features ....................................... 4
Technical Data ............................ 10
Ordering Information ................... 12
External View .............................. 14
Internal Structure ........................ 15
Accessories ................................ 16
Drawing Operations .................... 21
Electrical Circuit Diagram ........... 22
Mechanical Interlock Type
Electrical Circuit Diagram ........... 24
External Dimensions ................... 26
Power Fuse ................................ 33
Selection Tables ......................... 34
Coordination Graph .................... 36
Operation Curves ....................... 37
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General Description
Combination Fixed TypeFixed Type Drawout Type
LS Susol Vacuum ContactorsWe have the major technology that others can not catch up.LS Susol vacuum contactors provide high withstand - current strength and switching capacity as well as versatile auxiliary functions.
LS Susol vacuum contactors are mainly used for the switching of motors, transformers, capacitors in AC power lines. They can be installed in multi - stack cubicles.A vacuum contactor comprises several assemblies such as switching mechanism including vacuum interrupters, magnetic actuator, high strength molded front cover and auxiliary devices. Stable and high operating cycle is executed by the vacuum interrupters made of high alumina ceramic tube which makes it possible to degas in a high temperature with excellent mechanical strength.
Actuating is available either at instantaneous or continuous excitation. Functions for safety in connecting and disconnecting are also provided.
Variety
Reliability
Up Grade
Safety
Compatibility
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F - Class CradleE - Class Cradle G - Class Cradle B - Class Cradle
H - Class Cradle
M - Class Cradle
Direct - Drawout Type Combination Drawout Type Combination Direct - Drawout Type
Operation conditionsAmbient temperature : - 5 to 40℃Maximum temperature of 24 - hour mean : 35 ℃Altitude : 1000mHumidity : 24 - hour measured average - max. 95% RH 1 month measured average - max. 90% RH
Applied standardsIEC 62271 - 106, IEC 60282 - 1, JEM 1167, KEMC 1126
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Vacuum Interrupter & Fuse
400A
300A
Vacuum Interrupter
SCPDs Test Report
Up – Graded performance by the new standard
Verify the Short-time current performance by developing Earthing Switch of Susol VCS
IEC 62271 - 106 in KOLAS certification authority by the new standard 7.2kV 400A Fuse has a combination of blocking performance verification.
Short Circuit Protective Device (SCPDs)
[ 6.3kA ][ 7.2kV 400A ]
Old New
High performance, high reliability and long service lifeLS vacuum interrupters that comply with IEC, ANSI and NEMA standards are manufactured by the process of brazing and degasing together in a high vacuum furnace to assure high reliability.
High speed interruption and short arcing timeIt has fast recovering characteristic of vacuum insulation. When opening it breaks the current at the first current - zero point to minimize the wearing of contacts.
Superior mechanical strength and degasingProviding long service life and suited for frequently operating purpose due to using high alumina ceramic tube and degasing in a high temperature.
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Earthing Switch Test Reports
V-Check certificate by KAS
What is the V-Check Mark?It is a integration certification mark that has been certified on the basis of KAS(Korea Accreditation System) in accordance with the national standard basic law and ISO/IEC Guide 65
Verify the Short-time current performance by developing Earthing Switch of Susol VCS
Earthing Switch Short time withstand current
[ 6.3kA ]
Korea Electrical Safety Corporation
Development test and certificationby public institution
ㆍ �Public institution development test according to IEC62271-106
ㆍ �Verify the short circuit coordination with power fuse
-Breaking test : �success the 40kA short circuit breaking
-Making test : �success the 40kA short circuit making
ㆍCertified V-Check mark by KAS
Reliable breaking on accident currentLS limited power fuse can break accident current very fast(0.5cycle) by occurring big resistance due to internal nonconducting phenomenon.
[ Safety ]LS Susol vacuum contactors provide several auxiliary
functions for safe and comfortable use.
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Alternation
[ 1 : 1 ]Maintenance is easy to use compatible with existing product
Integral Bushing
Compatibility with existing product
Compatibility with existing productNew product Susol VCS is a customer-oriented product considering convenience and economy of maintenance.In particular, distance between rails, phase segregation, distance between statue of main body and cradle of old and new products are the same, so it is easy to replace the products.
A ; Distance between railsB : Phase segregationC : Distance between same statue
Suitable for Metal Clad SwitchgearThe structure of B type cradle unification bushings and single - molded fuse - holder barrier enables vacuum contactors to build Metal Clad Switchgears.
Interlock For the safety of a operator interlock is equipped as standard.
Mechanical Interlock TypeIt is easy to use and stable to run motor, to switch commercial power and standby power by connecting with an mechanical interlock device with two VC.
Directly withdrawable equipmentThis enables the withdrawing of a vacuum contactor from a panel without opening a door to prevent any possibility of electric shock.
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Additional Equipment
[ Safety ]LS Susol vacuum contactors provide several auxiliary
functions for safe and comfortable use.
■ Interlock device
■ Drawout cradle for MCSG
■ One-molded fuse holder
■ Various dual protection device
■ Fuse checker and micro switch
Mechanical Interlock Type
Contactor over contactor arrangement
Personnel Safety for User
Technical Data
Single type Fixed (Z) type Drawout (D) type Direct - Drawout (K) type
TypeContinuous Excitation (E) VC-3Z
- 42E
VC-6Z
- 42E
VC-3Z
- 44E
VC-6Z
- 44E
VC-3D
- 42E
VC-6D
- 42E
VC-3D
- 44E
VC-6D
- 44E
VC-3K
- 42E
VC-6K
- 42E
VC-3K
- 44E
VC-6K
- 44EInstantaneous Excitation (L)Rated operation voltage [kV] 3.3 6.6 3.3 6.6 3.3 6.6 3.3 6.6 3.3 6.6 3.3 6.6Rated voltage Ur[kV] 3.6 7.2 3.6 7.2 3.6 7.2 3.6 7.2 3.6 7.2 3.6 7.2Rated operational current le[A] 200 400 200 400 200 400Rated frequency fr[Hz] 50/60Rated breaking current (kA, O - 3min - CO - 2min - CO) 4Rated short - time withstand current (kA - sec) 2.4kA-30s, 4kA-10s, 6kA-2s, 6.3kA-1sRated short - time peak current (kApeak - 0.5Cycle) 60Switching frequency(AC3) [op./hr] E : Continuous 1200, L : Instantaneous 300Lifetime Mechanical [×10, 000operations] E : Continuous 300, L : Instantaneous 50
Electrical [×10, 000operations] 30Impulse withstand voltage Up[kV] 60Power-frequency withstand voltage Ud[kV/1min] 20Excitation method E : Continuous, L : InstantaneousControl voltage [V] DC/AC 110V, 125V, 220VAuxiliary contact
Current [A] 10 (AC)Voltage [V] 600max ~ 48min
Arrangement Continuous 3NO3NC, Instantaneous 2NO2NC 2NO2NC
Max. Applicable(3 phase)
Motors [kW] 750 1, 500 1, 500 3, 000 750 1, 500 1, 500 3, 000 750 1, 500 1, 500 3, 000Transformers [kVA] 1, 000 2, 000 2, 000 4, 000 1, 000 2, 000 2, 000 4, 000 1, 000 2, 000 2, 000 4, 000Capacitors [kVA] 750 1, 500 1, 200 2, 000 750 1, 500 1, 200 2, 000 750 1, 500 1, 200 2, 000
Weight [kg] 24 41 56
Power fusePower fuses can be installed into combination(G, B, F) type contactors for the protection of equipments and systems from short - circuit.Fuse ratings are selected properly after system analysis and some accessories such as fuse link clips should be selected by the fuse rating.
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Standard Type Ratedvoltage(kV) Rated current(A) Diameter
(mm)Length(mm)
DIN Type
LFL - 3/6G - B 3.6/7.2 5, 10, 20, 30, 40, 50, 63, 75, 100
45
192LFL - 3/6G - B 3.6/7.2 125 292LFL - 3G - B 3.6 160, 200 292LFL - 6G - B 7.2 160, 200 292
KS Type
Generaluse
LFL - 3/6G - 3.6/7.25(T1.5), 10(T3), 20(T7.5),
30(T15), 40(T20), 50(T30), 60(T30) 50 261
75(T50), 100(T75) 60 311
LFL - 3G - 3.6150(T100), 200(T150) 60 311300(T250), 400(T300) 77 311
LFL - 6G - 7.2 150(T100), 200(T150) 77 311
Formotors
LFL - 3M - 3.6M20, M50, M100 60 200
M150, M200 77 200M300 , (M400) 87 250
LFL - 6M - 7.2M20, M50 60 311
M100, M150 , M200 77 350M300 , (M400) 87 450
LFL - 6G - 300, 400 is not possible to combine with VC
Power fuse ratings combination type
Note) Load capacity is different from ratings of Power Fuse Load capacity varies depending on the power rating of the fuse
Combination(PF) type Combination Drawout(G) Type Combination Direct-Drawout(B) Type Combination Fixed(F) Type
TypeContinuous Excitation (E) VC-3G
- 42EVC-6G- 42E
VC-3G- 44E
VC-6G- 44E
VC-3B- 42E
VC-6B- 42E
VC-3B- 44E
VC-6B- 44E
VC-3F- 42E
VC-6F- 42E
VC-3F- 44E
VC-6F- 44EInstantaneous Excitation (L)
Rated operation voltage [kV] 3.3 6.6 3.3 6.6 3.3 6.6 3.3 6.6 3.3 6.6 3.3 6.6Rated voltage Ur[kV] 3.6 7.2 3.6 7.2 3.6 7.2 3.6 7.2 3.6 7.2 3.6 7.2Rated operational current le[A] 200 400 200 400 200 400Rated frequency fr[Hz] 50/60Rated breaking current (kA, O - 3min - CO - 2min - CO) 4kA (40kA with fuse)PF CombinationRated breakingcurrent
Making 40kA Breaking 40kA Take over(O - 3min - O - 3min - O) 4kA
Rated short - time withstand current (kA - sec) 2.4kA-30s, 4kA-10s, 6kA-2s, 6.3kA-1sRated short - time peak current (kApeak - 0.5Cycle) 60Switching frequency(AC3) [op./hr] E : Continuous 1200, L : Instantaneous 300Lifetime Mechanical [×10, 000operations] E : Continuous 300, L : Instantaneous 50
Electrical [×10, 000operations] 30Impulse withstand voltage Up[kV] 60Power-frequency withstand voltage Ud[kV/1min] 20Excitation method E : Continuous, L : InstantaneousControl voltage [V] DC/AC 110V, 125V, 220VAuxiliarycontact
Current [A] 10 (AC)Voltage [V] 600max ~ 48minArrangement 2NO2NC
Weight Note) [kg] 46 62 46
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VC G3 4 2 E E C1D1
P2 T1 F01
Ordering Information
VC 4 2 E E D1 ABGHZ3
■Contactor
Accessory
A Pad Lock Note)
B Button Pad Lock
C Button CoverD Lead Wire Ass'y(3M)E Plug, Pin(21Pin)G Blue Plenem Wire(VC, Lead Wire)H Yellow Plenem Wire(VC, Lead Wire)I Position S/WJ 3a3b Auxiliary ContactK 3 Position S/WL CTD
Fuse Checker
C0 Without
C1 With General Type
C2 With SIBA Type
Control Voltage
D1 DC 110V
D2 DC 220V
D3 DC 125VA1 AC 110VA2 AC 220VA3 AC 125V
Control Voltage
D1 DC 110V
D2 DC 220V
D3 DC 125VA1 AC 110VA2 AC 220VA3 AC 125V
Installation
D Drawout Type
G Combination Drawout Type (Fuse connectable)
F Combination Fixed Type
K Direct - Drawout Type (For MCSG)
B Combination Direct - Drawout Type (Fuse connectable and for MCSG)
Breaking Current(kA)
4 4
Rated Current(A)
2 2004 400
Rated Voltage(kV)
3 3.66 7.2
Modification
E SUSOL
Modification
E SUSOL
Control Method
E Continuous Excitation
L Instantaneous Excitation
Control Method
E Continuous Excitation
L Instantaneous Excitation
Rated Current(A)
2 200
4 400
Rated Voltage(kV)
3 3.6
6 7.2
Unique Symbol
VC Vacuum Contactor
Unique Symbol
VC Vacuum Contactor
Installation
Z Fixed Type
Breaking Current(kA)
4 4
Fuse
F01 LFL-3/6G - 5~60 3.3/6.6kV 200/400A CommonF02 LFL-3M - 20~100 3.3kV 200/400A
F03LFL-3/6G - 75~100
3.3/6.6kV 200/400A CommonLFL-3G - 150~200
LFL-6M - 20~50F04 LFL-3M - 150~200 3.3kV 200/400A
F05LFL-3G - 300~400 3.3/6.6kV 200/
400A CommonLFL-6G - 150~200F06 LFL-6M - 100~200 6.6kV 200/400A Only F07 LFL-3M - 300~400 3.3kV 400A OnlyF08 LFL-6M - 300~400 6.6kV 400A OnlyF09 LFL-3/6G - 5~100B 3.3/6.6kV 200/400A CommonF10 LFL-3/6G - 125B~200B 3.3/6.6kV 200/400A Common
ABGH
Accessory
A Pad Lock Note)
B Button Pad LockC Button CoverD Lead Wire Ass'y(3M)E Plug, Pin(21Pin)G Blue Plenem Wire(VC, Lead Wire,3.5m)H Yellow Plenem Wire(VC, Lead Wire,3.5m)I Position S/WJ 3a3b Auxiliary ContactK 3 Position S/WL CTD
PT
P0 WithoutP1 100Var, 1EAP2 100Var, 2EAP3 200Var, 1EAP4 100Var, 2EA
Truck Note)
T0 WithoutT1 Earthing Switch
T2 Metal Shutter
*Note) These option are only applied for K(Direct-Drawout Type), B(Combination Direct-Drawout Type).
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Accessory
A 1a1b(PS1)
B 2a 2b(PS2)
C 3 Position S/W
D ES(Earthing S/W)Without Option
E Earthing Aux S/W(2a2b)
F Earthing Aux S/W(4a4b)
G Earthing S/W With Keylock
H ES with Locking Magnet(DC 110V)
I ES with Locking Magnet(DC 220V)
J ES with Locking Magnet(DC 125V)
K ES with Locking Magnet(AC 110V)
L ES with Locking Magnet(AC 220V)
M ES with Locking Magnet(AC 48V)
N ES with Locking Magnet(DC 24V)
O ES with Locking Magnet(DC 48V)
P Shutter Lock
VC MI D1 D162E62E
VCL
Cradle TYPE
E E ClassF F2 Class
G G(Bushing Type)M Metal Shutter Direct - Drawout Type(K, B)B Direct - Drawout Type(K, B)H Earthing S/W Direct - Drawout Type(K, B)
Vacuum Contactor(VC1)
32E VC - 3Z - 42EE
34E VC - 3Z - 44EE
62E VC - 6Z - 42EE64E VC - 6Z - 44EE32L VC - 3Z - 42LE34L VC - 3Z - 44LE62L VC - 6Z - 42LE64L VC - 6Z - 44LE
Product Name
MI MI(With Only VC)
Control Voltage(V)
D1 DC 110V
D2 DC 220V
D3 DC 125VA1 AC 110VA2 AC 220VA3 AC 125V
Vacuum Contactor(VC2)
32E VC - 3Z - 42EE
34E VC - 3Z - 44EE
62E VC - 6Z - 42EE64E VC - 6Z - 44EE32L VC - 3Z - 42LE34L VC - 3Z - 44LE62L VC - 6Z - 42LE64L VC - 6Z - 44LE
Control Voltage(V)
D1 DC 110V
D2 DC 220V
D3 DC 125VA1 AC 110VA2 AC 220VA3 AC 125V
Ratings
42/44Breaking Current 4kARated Current 200/400A
Unique Symbol
VCL VCS Cradle
Unique Symbol
VC VC
Rated Voltage(kV)
3/6 3.6/7.2
■Cradle
■MI(With Only VC)
3/6 E EI42/44
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External View
Combination Drawout Type
Combination Direct - Drawout Type
E - Class Cradle
M - Class Cradle
F - Class Cradle
B - Class Cradle
Front Cover
Fuse Checking Window
Auxiliary Switch
ON/OFF Indicator
Operation Counter
Manual Trip Button
Drawout Carrier
Direct - Drawout Carrier
Drawout Handle
Interlock Lever
Hole for Drawout Handle Insertion
TEST/RUN Indicator
Cradle
Fuse Case
Shutter
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Main contact partConsists of vacuum interrupters, main terminals and moving shunts that are supported by a one - moulded frame that maintains insulation between phases. Vacuum interrupters are operated by means of the actuating mechanism that is connected to movable parts of a vacuum interrupter with a insulation rod.
Actuating mechanismDesigned simply without any linkage to be suited for frequent - operation and long service life. The actuating lever connected to a moving core of a actuating magnet that carrys out the function of a actuating shaft moves up and down to control the contact pressure for stable operations.
Control methodContinuous excitation - �During a contactor is closed the control coil is required to
be excited continuously to pul l the moving core magnetically. In case of discontinuing the control power the moving core is to be returned by a spring because of the disappearance of magnetic force, which causes the opening of a contactor.
Instantaneous excitation - �In this method the continuous exciting of a control coil to maintain the closing of a contactor is not required as the latch built in it holds the mechanism. In case of manual tripping, a contactor will be tripped by releasing the latch when turn on the manual trip button.
Latch mechanism
Line terminal
Insulation mold frame
Load terminal
Shunt
Control coil
Return spring
Spring guide Spring spacer
Protection cover
Vacuum interrupter
Insulation rod
Contact springActuating lever
Fixed core
Moving core
Main contact part
Internal Structure
Type Control method Control voltage (V)
Closing current(A) / time(ms)
Trip current(A) / time(ms)
Holding current(A) / time(ms)
VC - 3/6 - 42/44 - E/L
Continuous Excitation(E)
DC/AC 110V 3/100 - 0.6/40
DC/AC 125V 3/100 - 0.6/40
DC/AC 220V 2/100 - 0.6/40
Instantaneous Excitation(L)
DC/AC 110V 5/100 3/35 - DC/AC 125V 5/100 3/35 -
DC/AC 220V 10/100 6/35 -
Instantaneous Excitation(L)(With CTD)
AC 110V 5/100 5/35 -
AC 125V 5/100 5/35 -
AC 220V 10/100 10/35 -
Moving electrode
Moving electrode terminal
Bellows
Bellows shield
Ceramic
Arc shield
Contact Fixed electrode terminal
Fixed electrode
Internal structure
Vacuum interruptersIn the closed position, normal current flows through the interrupter. When a fault occur and interruption is required, the contacts are quickly separated. The are which is oriented between surfaces of contact shall diffuse at the contact structure of flat shape. It prevents local heating and damage. The arc burns in an ionized metal vapor, which condenses on the surrounding metal shield.The arc is extinguished and vapor production is ceased at current zero. The metal vapor plasma is very rapidly dispersed, cooled, recombined, and deionized, and the metal vapor products are quickly condensed so that the contacts withstand the transient recovery voltage.
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Fuse checker / Micro switch
PT(Potential transformer)
Fuse clip
Auxiliary switch
Fuse checker / Micro switchFuse checker is operated in case of fuse blowing and output mechanical signal at same time. A micro switch is a part of fuse checker. The mechanical input signal is changed to electrical out signal by micro switch.Note) 19 - 20 : NO contact, 19 - 21 : NC contact
PT(Potential transformer)2 each of PTs can be mounted on drawout type contactors and fuse combination type. These are 100VA and 200VA PTs rated 3.6/7.2kV.
Fuse clipIt is used to install or uninstall a fuse link to the holder. Its dimensions depend on ratings.
Auxiliary switchAuxiliary switches are 2NO+2NC as standard and additional 3NO+3NC can be added on request.
Position switchThis enables checking contactor positions when draw - in and draw - out. Remote checking is also possible through signaling via micro switches in each position.
(Com)
(NO) (NC)
Run PositionTest Position
Accessories
Rated voltage(V) Secondary voltage(V) Class Burden(VA) Frequency(Hz)
3300/6600 110/220 1 100/200 50/60
Note) ( ) is contact point in case of PS 2
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AC InputDischarge
DC Output
1 2 3 4 5 6
7 8 9 10 11 12
Rating DescriptionType CTD - 100 CTD - 200
Rated input voltage(V) AC 100/110 AC 200/220Frequency(Hz) 50/60 50/60
Rated impulse voltage(V) 140/155 280/310
Charging time Within 5 sec. Within 5 sec.
Trip command possible time Max. 30 sec. Max. 30 sec.
Input voltage range 85%~110% 85%~110%
Capacitor rating(μF) 400 160
CTD is built as standard in the contactor with AC control of instantaneous excitation so that the contactor can be tripped within 30 seconds in the event of an electricity failure. The automatic trip circuit in the event of an electricity failure is to be built by a customer.
Dimensions
Control circuit diagram Terminal
CTD(Condensor Trip Device)
HandleIt is a bent - lever to actuate a direct - drawout carrier by inserting and turning in K and B type contactors
Fuse checking windowEnables the visible check of a fuse like its outside status and temperature - rise in a fuse combination type contactor.Note) Applied G, B, F type
ON/OFF indicatorTo visibly check whether power is supplied or not
CounterThis is a ON/OFF operation counter by using 5 digit.
Test/Run position indicatorThis enables checking contactor positions visibly when connecting or disconnecting a contactor.Note) Applied direct drawout type only.
Fuse caseMade of high strength BMC resin to offer superior insulation and safety.Note) Applied fuse combination type.
BushingIt is mono - block bushing to be used in the cradles of G, B, M, H - type drawout contactors. It provides high insulation level, so recommended to use in contactors for MCSG. Note) Applied G, B, M, H - Class Cradle.
Direct - drawout carrierIt is a screw - sliding type drawout equipment to draw - in and draw - out a contactor directly out of a panel for personal safety. It is built in K and B type contactors.
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Accessories
Padlock and Door racking interlock
Trip coil monitoring contact
• �With this door options for H type cradle draw - in/out is allowed only when the door is closed.
• �If draw - in /out is necessary when the door is open, use the operation lever put in the slot of the breaker handle. Insert it into the hole in the bottom of door interlock.
• �Padlock is also optional, which can lock to prevents the draw - in/out of the breaker in the position of TEST and SERVICE.
Door interlock
• �Device for monitoring the functions of the trip coils.
• �To monitor the trip coils connect its terminals with the trip coil monitoring relay as shown on the circuit diagram.
- �If the trip coil is normal : closed - circuit consisting
- �If the trip coil is damaged : open circuit 1) �monitor the trip coils in closed position of
the breaker. 2) �monitor the trip coils in trip position of the
breaker.
• �Coil Test Unit is opional, which enable monitoring the coils by connecting in parallel with the trip coil operation switch.
M
CCCU
ON
4(+)
OFF
5(+)
Vzb
Vza
TC2(-)
Vzb
3(TCS)
DC
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Push Bar
• �It is a protection cover to prevent an acc ident due to un in tended operation of ON/OFF button.
• �Use the push - bar to operate the ON/OFF button.
• �It is to prevent manual operation of ON/OFF button due to user’s wrong handling.
• �It is not possible to handle ON/OFF operation under the “Button lock” status.
Button Cover
Button Padlock
Earthing Switch
• �For the safety during the maintenance of switchgear in the position of TEST/Drawout discharge the charging current in the load side of a VCS with this earthing switch. It is available only for K, B type Earthing Truck.
* �Regarding the operations of earthing switch and related accessories see the instruction manual.
* ��Applicable Standards : IEC 62271 - 102
Earthing Switch
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• �In case of using earthing switch it can be added for two types of interlocking. 1) Interlock to keep opening 2) Interlock to keep earthing
Earthing Switch Keylock
Locking Magnet for Earthing Switch
• �In case of using earthing switch it can be added to prevent the earthing switch from opening or earthing before it is energized.
• �Verify if the locking magnet is energized before opening or earthing the earthing switch.
• �Control voltage - �DC 24V / DC 48V / DC 110V / DC 125V / DC 220V - �AC 48V / AC 110V / AC 220V
ES Locking magnet
Keylock for Earthing Switch
Accessories
20
Details of TEST/RUN Position
For standard draw - out types (D, G)■ When draw - in a contactor into a cradle.1. Check that the contactor is in the state of open (TEST Position).2. �While lifting the interlock lever, insert the contactor about 50mm into the
cradle.3. �Release the interlock lever and push the contactor into the cradle by the
RUN position.
■ When draw - out a contactor from a cradle.1. Check that the contactor is in the state of open (RUN Position).2. �While lifting the interlock lever, draw the contactor about 50mm out of the
cradle.3. �Release the interlock lever and pull the contactor from the cradle by the
TEST position.
For direct draw - out types (K, B)■When draw - in a contactor into a cradle.1. �Check that the contactor is in the state of open (TEST Position).2. �Hold both knobs at the bottom of the contactor.3. �Pull the knobs towards the inside and push them towards the front.4. �Mount the handle.5. �Turn the handle clockwise and move the contactor forward.(About 11 turns)6. �When it reaches the contact point, the handle operates in idle and the
contactor does not lead in anymore.
■ When draw - out a contactor from a cradle.1. �Check that the contactor is in the state of open (RUN Position).2. �Insert the handle into the hole for drawout handle insertion.3. �Turning the handle counterclockwise until the contactor reaches in the TEST
position. 4. �When the contactor reaches in the TEST position, handle operates in idle. Note) Check the power before connecting or disconnecting.
Drawing Operations
<TEST Position>
<RUN Position>
<TEST Position>
<RUN Position>
21
CC
8
7
12
11
CC
6
5
2
1110
9
ON/OFF
DC/AC
31
16
12
6
5
4
32
1
1614
1513
1314
15
9
10
CU [Auxiliary:3a3b]7
8Vzb
4
[Auxiliary:2a2b]
1412108
131197
1110
9
12
5
4
32 13
14
7
8CC
CU
ON
4(+)
OFF
5(+)
Vzb
Vza
TC2(-)
Vzb
3(TCS)
DC
[Auxiliary:2a2b]
1412108
131197
1110
9
12
56
4
32
1
1314
15
7
8
2
AC
CTDON
4
Vzb Vza
1
3OFF
5
15
CU
(+) (-)
CC TC
Vzb
6(TCS)
Electrical Circuit Diagram
Continuous Excitation(DC/AC 110V~220V): Fixed Type
Instantaneous Excitation(DC 110V~220V): Fixed Type
Instantaneous Excitation_CTD(AC 110V~220V): Fixed Type
Apply the power source at terminals of 1 - 2. Switch it using contacts of No.3 - 4 terminal.
When closing : Switch it using a contact of No. 4(+), 2(-) terminalWhen tripping : Switch it using a contact of No. 5(+), 2(-) terminal→ Contactor does not operate when reverse connected
Apply the power source at terminals of 1 - 2When closing : Switch it using contacts of No.3, 4 terminalWhen tripping : Switch it using contacts of No.5, 15 terminal
•CU : Control Unit•CC : Closing Coil•VZb : Auxiliary Switchs Contact "b"
•CU : Control Unit•CC : Closing Coil•TC : Tripping Coil•VZb : Auxiliary Switchs Contact "b"•VZa : Auxiliary Switchs Contact "a"
•CU : Control Unit•CC : Closing Coil•VZb : Auxiliary Switchs Contact "b"
22
<main circuit>
8
7
12
11
6
5 9
10
[Auxiliary:2a2b]
21
19
20
[FUSE CHECKER]
CCCC2
ON/OFF
VzbDC/AC
31
CU
4
M
181617
R S T
1110
9
16
12
6
5
4
32
1
7
8
2120
19
17
18
<main circuit>
10
9
14
13
8
7 11
12
[Auxiliary:2a2b]
21
19
20
[FUSE CHECKER]181617
R S T
1110
9
16
12
5
4
214313
7
8
2120
19
17
18
M
CCCU
ON
4(+)
OFF
5(+)
Vzb
Vza
TC2(-)
Vzb
3(TCS)
DC
10
9
14
13
8
7 11
12
[Auxiliary:2a2b]
21
19
20
[FUSE CHECKER]
<main circuit>
181617
R S T
1110
9
16
12
5
6
4
2
15
14
1
313
7
8
2120
19
17
18
M
2
AC
CTDON
4
1
3OFF
5
15
CU
(+) (-)
Vzb Vza
CC TC
Vzb
6(TCS)
Continuous Excitation(DC/AC 110V~220V): Drawout Type
Instantaneous Excitation(DC 110V~220V): Drawout Type
Instantaneous Excitation_CTD(AC 110V~220V): Drawout Type
Apply the power source at terminals of 1 - 2. Switch it using contacts of No.3 - 4 terminal.
When closing : Switch it using a contact of No. 4(+), 2(-) terminalWhen tripping : Switch it using a contact of No. 5(+), 2(-) terminal→ Contactor does not operate when reverse connected
Apply the power source at terminals of 1 - 2When closing : Switch it using contacts of No.3, 4 terminalWhen tripping : Switch it using contacts of No.5, 15 terminal
•CU : Control Unit•CC : Closing Coil•VZb : Auxiliary Switchs Contact "b"
•CU : Control Unit•CC : Closing Coil•TC : Tripping Coil•VZb : Auxiliary Switchs Contact "b"•VZa : Auxiliary Switchs Contact "a"
•CU : Control Unit•CC : Closing Coil•TC : Tripping Coil•VZb : Auxiliary Switchs Contact "b"•VZa : Auxiliary Switchs Contact "a"
23
Mechanical Interlock Type Electrical Circuit Diagram
CCCC2
ON/OFF
Vzb2DC/AC
31
CUVzb1
4
1110
9
16
12
6
5
4
32
1
1314
15
7
8
6
5
12
11
1614
15139
10
[Auxiliary:3a2b]
CCCC2
ON/OFF
Vzb1DC/AC
31
CUVzb2
4
11
10
9
16
12
6
5
4
32
1
1314
15
78
6
5
12
11
1614
15139
10
[Auxiliary:3a2b]
DC CCCU
ON
4(+)
Vzb1
OFF
5(+)
Vza
TC2(-)
Vzb2
8
7
1412
13119
10
[Auxiliary:2a2b]
DC CCCU
ON
4(+)
Vzb2
OFF
5(+)
Vza
TC2(-)
Vzb1
8
7
1412
13119
10
[Auxiliary:2a2b]
1110
9
12
6
5
4
2 1314
7
8
11
10
9
12
5
4
2 1314
78
Continuous Excitation(DC/AC 110V~220V): Fixed Type
Instantaneous Excitation_CTD(DC 110V~220V): Fixed Type
VC1 VC2
VC1 VC2
24
2
AC
CTDON
4
Vzb2
Vzb1Vza
1
3OFF
5
15
CU
(+) (-)
CC TC
8
7
1412
13119
10
[Auxiliary:2a2b]
2
AC
CTDON
4
Vzb1Vza
1
3OFF
5
15
CU
(+) (-)
CC TC
Vzb2
8
7
1412
13119
10
[Auxiliary:2a2b]
1110
9
12
5
4
32
1
1314
15
7
8
11
10
9
12
5
4
32
1
1314
15
78
Instantaneous Excitation_CTD(AC 110V~220V): Fixed Type
VC1 VC2
VC1(Upper)
VC2(Lower)
188
19
11
10
9
21
20
17
16
15
14
13
121
6
5
4
3
2
7
28
31
30
29
33
3222
26
25
24
23
27
188
19
11
10
9
21
20
17
16
15
14
13
121
6
5
4
3
2
7
28
31
30
29
33
3222
26
25
24
23
27
1222
1626
1525
1121
1727
1121
1727
14
15
16
25
24
26
1323
24 14
1323
25
External Dimensions
385(Terminal Hole)
119 119
18819
1110
9
2120
17
161514
13121
6
543
2
728
3130
29
333222
262524
23
27
OFFO
240415
353
398.
620
.5115(Terminal Hole)
32
20
Ø11(Terminal Hole)
247
274.5
255
136.
5
110
4-Ø9(Mounting Hole)
440
570.2
309
316
565
119 119
OFFO
506.5
31
160
469
494
119 119
OFFO
440
565
518
494
570.2
160
309
518.3
335 31
(Unit : mm)
VC - 3/6Z - 42/44E(L)E
VC - 3/6D - 42/44E(L)E
VC - 3/6K - 42/44E(L)E
Fixed Type
Drawout Type
Direct - Drawout Type
26
119 119
OFFO
453
473
599
440
32
20
Ø11(Terminal Hole)
485.1
277.
916
0
543
316 31
4-Ø9(Terminal Hole)
(Unit : mm)
VC - 3/6F - 42/44E(L)E
570.2
31
506.5
160
309
316
OOFF
609
119 119
469
440
494
VC - 3/6G - 42/44E(L)E
OFFO
119 119
440
609
494
518
309
160
570.2
335 31
518.3
VC - 3/6B - 42/44E(L)E
Combination Drawout Type
Combination Direct - Drawout Type
Combination Fixed Type
* ���In case of applying 6M - 300/400, changes 543mm to 613mm
* ���In case of applying 6M - 300/400, changes 570.2mm to 640.2mm
* ���In case of applying 6M - 300/400, changes 570.2mm to 640.2mm
27
6
95
OFFOOFFO
500.6
576.
9
672
20
90
160
319.
3
439 820
76.7
32
20
670(Terminal Hole)4-Ø14(Mounting Hole)
340(Terminal Hole)
Ø14(Terminal Hole)
95
821.6
76.7
4-Ø14(Mounting Hole)
6
OFFO
559
604.
3
319.
316
0
672
20
90
340(Terminal Hole)
439
670(Terminal Hole)
32
20
Ø14(Terminal Hole)
76.7
821.6
670(Terminal Hole)95
6
20
160
319.
3
OFFO
559
604
340(Terminal Hole)
439
672 90
4-Ø14(Mounting Hole)
32
20
Ø14(Terminal Hole)
E Class Cradle(Drawout Type)
B Class Cradle(Drawout Type)
F Class Cradle(Drawout Type)
(Unit : mm)
External Dimensions
28
76.7
6
160
319.
3
821.6
95
OFFO
604
559
439
672 90
32
20
670(Terminal Hole)340(Terminal Hole) 4-Ø14(Mounting Hole)
Ø14(Terminal Hole)
20
4-Ø14(Mounting Hole)
20
6
90
95
821.6
670(Terminal Hole)
76.7
OFFO
160
610
672557
439
340(Terminal Hole)
319.
3
32
20
Ø14(Terminal Hole)
6
OFFO
559
784.
3
684(Terminal Hole)
734
180.
8
672 90
160
319.
317
8.5
754.6
861.3
20
500.1(Terminal Hole)638.5 87.3
32
20
Ø14(Terminal Hole)
4-Ø14(Mounting Hole)
M Class Cradle(Drawout Type)
H Class Cradle(Drawout Type)
G Class Cradle(Drawout Type) (Unit : mm)
29
6
670(Terminal Hole)954-Ø14(Mounting Hole)
OFFO
32
20
Ø14(Terminal Hole)
672
20
90
160
319.
3
340(Terminal Hole)
439
500.662
1.4
82076
.7
OFFO
20
6
95
821.6
670(Terminal Hole)4-Ø14(Mounting Hole)
160
319.
3
672 90559
621.
4
439
340(Terminal Hole)
76.7
90
32
20
Ø14(Terminal Hole)
1606
319.
3
20
95
76.7
670(Terminal Hole)
821.6
90
OFFO
672559
621.4
340(Terminal Hole)
439
32
20
Ø14(Terminal Hole)
4-Ø14(Mounting Hole)
E Class Cradle(Combination Drawout Type)
B Class Cradle(Combination Drawout Type)
F Class Cradle(Combination Drawout Type)
* ����In case of applying 6M - 300/400, changes 672mm to 742mm
* ����In case of applying 6M - 300/400, changes 672mm to 742mm
* ����In case of applying 6M - 300/400, changes 672mm to 742mm
(Unit : mm)
External Dimensions
30
6
20
319.
316
0
95
76.7
670(Terminal Hole)
821.6
OFFO
621.
4
559 90672
340(Terminal Hole)
4394-Ø14(Mounting Hole)
32
20
Ø14(Terminal Hole)
4-Ø14(Mounting Hole)
20
6
95 670(Terminal Hole)
76.7
OFFO
160
319.
3
622.
3
340(Terminal Hole)
439
90672557
821.6
32
20
Ø14(Terminal Hole)
4-Ø14(Mounting Hole)
OFFO
6
559
784.
3
684(Terminal Hole)
734
180.
8
638.5
672 90
160
319.
317
8.5
754.6
861.3
20
500.1(Terminal Hole)87.3
32
20
Ø14(Terminal Hole)
M Class Cradle(Combination Drawout Type)
H Class Cradle(Combination Drawout Type)
G Class Cradle(Combination Drawout Type) (Unit : mm)
* �In case of applying 6M - 300/400, changes 672mm to 742mm
* �In case of applying 6M - 300/400, changes 672mm to 742mm
* �In case of applying 6M - 300/400, changes 672mm to 742mm
31
188
19
11
10
9
21
20
17
16
15
14
13
121
6
5
4
3
2
7
28
31
30
29
33
3222
26
25
24
23
27
188
19
11
10
9
21
20
17
16
15
14
13
121
6
5
4
3
2
7
28
31
30
29
33
3222
26
25
24
23
27
1222
1626
1525
1121
1727
32
20
Ø11(Terminal Hole)
516(Terminal Hole)
540
495
423.
6
240(Terminal Hole)
270
255.
513
7.5
255.
513
7.5
918.
6
4-Ø11(Mounting Hole)
247
270.4
1121
1727
14
15
16
25
24
26
1323
24 14
1323
Mechanical Interlock Type (Unit : mm)
External Dimensions
32
Power fuseLS Prime - MEC power fuses are designed to protect equipments from fault current such as short - circuit, and generally used for the protection the circuits of transformers, capacitors and motors.
Considerations in application• �Power fuses are suitable for the protection from a short - circuit, not overload current.• �Fuse reset or re - use is not possible after fused are blown out.• �When the fuses are selected, their usage and circuit requirements should be considered.• �For the purpose of protection from the fault current below the lowest interrupting current
of the fuse it is desirable to replace it with a fuse having lower interrupting rate or add other overcurrent relay in series
• �Withstand voltage of the circuit should be higher than that of a fuse that protects it.• �Replace all three fuses in case of blowing in a fuse.
Considerations by the type of load1. Power fuses for transformer loads • �The fuse with sufficient rated current must be selected to avoid the deterioration of the
fuse element due to permissible overload in the long term. • �The fuse's current/time characteristic should cover the inrush current/time of the
transformer. �Fuse rated current ≥ Transformer rated current • �In case of protection of two or more transformers - �Fuse rating should be selected on the basis of the phase condition where maximum
current flows. - �In the event of short - circuit in the secondary of the transformer
The lowest interrupting current of the fuse < Short circuit current in the primary of the transformer The lowest interrupting current of the fuse < Short circuit current in the primary of the fuse
• �In case of potential transformers - �When the fuses are selected do not consider the short - circuit happening in the
secondary of the PT, but protecting PT itself and the circuit against the fault in the primary side.
- �Select the fuse with higher rated current than the load current so as not to be damaged by overcurrent.
- �The withstand strength such as permissible let - through current, I²t of the equipments to be protected must be higher than that of a fuse.
2. Power fuses for motor loads • �The fuse with sufficient rated current must be selected to avoid the deterioration of the - �fuse element due to permissible overload in the long term. • ��The fuse's current/time characteristic should cover the inrush current/time of the motor. - ��The inrush current of the motor must be within 5 times of the fuse rating and the fuse
should withstand at least 10 seconds under the condition. Fuse rated current ≥ Motor full load current
Note) Refer to the general considerations other than the above mentioned.
3. Power fuses for capacitor loads • ��The fuse with sufficient rated current must be selected to avoid the deterioration of the
fuse element due to permissible overload in the long term. • ��The fuse's current/time characteristic should cover the inrush current/time of the capacitor. • ��The size of inrush current depends on whether or not the serial reactors and parallel
capacitors exist.
KERI(24kV)
Power Fuse
Power fuses for motor loads
Power fuses for transformer loads
33
Selection Tables
G typeApplication
Model
Ratedvoltage
Ratedcurrent
Rated interrupting
current
Lowest interrupting
currentTransformer load (kVA ) Capacitive load
(kVA ) Dimensions (mm ) Applicable holder
(kV ) (A ) (kA ) (A ) Single phase Three phase Three phase A B C DLFL - 3/6G - 5
3.6 (7.2 )
5
40 5In
- ※ ( up to 5 ) up to 5 ※ ( up to 15 ) - ※ ( - )
261 50 47 25 LFH-6G-D60
LFL - 3/6G - 10 10 up to 10 ( up to 15 ) up to 15 ( up to 30 ) up to 10 ( up to 25 )LFL - 3/6G - 20 20 up to 20 ( up to 50 ) up to 30 ( up to 75 ) up to 30 ( up to 50 )LFL - 3/6G - 30 30 up to 30 ( up to 75 ) up to 75 ( up to 150 ) up to 50 ( up to 100 )LFL - 3/6G - 40 40 up to 50 ( up to 100 ) up to 100 ( up to 200 ) up to 75 ( up to 150 )LFL - 3/6G - 50 50 up to 75 ( up to 150 ) up to 150 ( up to 300 ) up to 100 ( up to 200 )LFL - 3/6G - 60 63 - ( - ) - ( - ) - ( - )LFL - 3/6G - 75 75
40 5In
up to 150 ( up to 200 ) up to 200 ( up to 400 ) up to 200 ( up to 400 )
311 60 57 30 LFH-6G-D1HLFL - 3/6G - 100 100 up to 200 ( up to 400 ) up to 375 ( up to 750 ) up to 300 ( up to 600 )LFL - 3G - 150
3.6
150 up to 300 ( - ) up to 500 ( - ) up to 400 ( - )LFL - 3G - 200 200 up to 400 ( - ) up to 750 ( - ) up to 600 ( - )LFL - 3G - 300 300
40 5In
up to 625 ( - ) up to 1,000 ( - ) up to 1,000 ( - )
311 77 73 43 LFH-6G-D2HLFL - 3G - 400 400 up to 750 ( - ) up to 1,500 ( - ) - ( - )LFL - 6G - 150
7.2
150 - ( up to 500 ) - ( up to 1,000 ) - ( up to 800 )LFL - 6G - 200 200 - ( up to 750 ) - ( up to 1,500 ) - ( up to 1,200 )LFL - 6G - 300 300
40 5In- ( up to 1,250 ) - ( up to 2, 000 ) - ( - )
350 110 108 55 LFH-6G-D4HLFL - 6G - 400 400 - ( - ) - ( up to 2,500 ) - ( - )LFL - 3/6G - 5B
3.6 (7.2 )
5
40 4In
4 ~ 8 ( 8 ~ 16 ) 6.7 ~ 14 ( 13 ~ 28 ) up to 9.8 ( up to 9.8 )
195 55 - -
LFH-6G-D1HB
LFL - 3/6G - 10B 10 6 ~ 13 ( 13 ~ 25 ) 11 ~ 22 ( 21 ~ 44 ) 9.8 ~ 12 ( 19 ~ 24 )LFL - 3/6G - 20B 20 15 ~ 31 ( 30 ~ 62 ) 25 ~ 53 ( 51 ~ 107 ) 12 ~ 31 ( 24 ~ 61 )LFL - 3/6G - 30B 30 21 ~ 42 ( 40 ~ 84 ) 35 ~ 73 ( 70 ~ 145 ) 31 ~ 46 ( 61 ~ 92 )LFL - 3/6G - 40B 40 40 ~ 82 ( 80 ~ 165 ) 69 ~ 143 ( 137 ~ 286 ) 46 ~ 64 ( 92 ~ 128 )LFL - 3/6G - 50B 50 49 ~ 102 ( 98 ~ 204 ) 85 ~ 117 ( 170 ~ 354 ) 64 ~ 81 ( 128 ~ 163 )LFL - 3/6G - 60B 63 66 ~ 137 ( 132 ~ 275 ) 114 ~ 238 ( 229 ~ 476 ) 181 ~ 105 ( 163~ 210 )
192 77 - -LFL - 3/6G - 75B 75 68 ~ 165 ( 134 ~ 330 ) 117 ~ 285 ( 233 ~ 571 ) 105 ~ 150 ( 210 ~ 300 )LFL - 3/6G - 100B 100 128 ~ 220 ( 256 ~ 440 ) 222 ~ 381 ( 443 ~ 762 ) 150 ~ 222 ( 300 ~ 445 )LFL - 3/6G - 125B 125
40 4In
151 ~ 275 ( 302 ~ 550 ) 261 ~ 476 ( 522~ 952 ) 222 ~ 275 ( 445~ 550 )
292 77 - - LFH-6G-D2HBLFL - 3G - 160B
3.6160 211 ~ 352 ( - ) 365~610 ( - ) 275 ~ 370 ( - )
LFL - 3G - 200B 200 265 ~ 440 ( - ) 495 ~ 762 ( - ) 370 ~ 550 ( - )LFL - 6G - 160B
7.2160 - ( 425 ~ 704 ) - ( 735 ~1,220 ) - ( 550 ~ 742 )
LFL - 6G - 200B 200 - ( 437 ~ 880 ) - * ( 755 ~1,520 ) - ( 742 ~1,000 )
M typeApplication
Model
Ratedvoltage
Ratedcurrent
Rated interrupting
current
Lowest interrupting
currentTransformer load(kVA) Capacitive
load(kVA) Dimensions(mm) Applicable holder
(kV) (A) (kA) (A) Three phase Three phase A B C DLFL - 3M - 20
3.6
20
40 7In
37 ~ 75 up to 50200 60 58 30 LFH-3M-100LFL - 3M - 50 50 90 ~ 200 up to150
LFL - 3M - 100 100 220 ~ 400 up to 300LFL - 3M - 150 150 450 ~ 630 up to 400
200 77 73 43 LFH-3M-200LFL - 3M - 200 200 710 ~ 800 up to 800LFL - 3M - 300 300 900 ~ 1, 250 up to 1,000
250 87 84 50 LFH-3M-400LFL - 3M - 400 400 1, 500 -LFL - 6M - 20
7.2
20
40 7In
75 ~ 160 up to 100311 60 58 30 LFH-6M-50
LFL - 6M - 50 50 185 ~ 400 up to 300LFL - 6M - 100 100 450 ~ 800 up to 600
350 77 73 43 LFH-6M-200LFL - 6M - 150 150 900 ~ 1, 250 up to 800LFL - 6M - 200 200 1, 500 -
LFL - 6M - 300 300 2, 500 -450 87 84 50 LFH-6M-400
LFL - 6M - 400 400 3, 000 -
※ ( ) is 7.2kV applicationIt is possible G type fuse for motor loads but recommend the M type fuse
DIN Size
KS Size
KS Size
34
Selecting conditions and warning1. �※ The values in ( ) apply to the loads of 7.2kV.2. �It is assumed that the inrush current of a transformer is
10 times of the full load current of a motor for 0.1 second.
- �The rated current of a fuse is selected to carry continuously the current of 1.5 times of rated current of a transformer.(1.3 times in the case of * )
- ���In the transformer load table it is assumed that the interruption will be made at 25 times of rated current within 2 seconds.
3. ��It is assumed that the inrush current of a motor is 5 times of full load current for 10 seconds.
4. �In the case of using the M(motor protection) type fuses for the purpose of the short - circuit protection of a motor or a starter select the proper rating in addition refer to the characteristic curves on the catalog to make the device protected from overload by a circuit breaker or a contactor.
5. ��It is assumed that the inrush current of a capacitor is 71 times of its rated current for 0.002 second.
- �The rated current of a fuse is selected to carry continuously the current of 1.43 times of rated current of a capacitor.
- �In case service life of more than 1000 operations is required select in the M(motor protection) type fuse table.
6. ��The above mentioned comments are according to KS(Korean Industrial Standard) and subject to the real situation.
G typeApplication
Model
Ratedvoltage
Ratedcurrent
Rated interrupting
current
Lowest interrupting
currentTransformer load (kVA ) Capacitive load
(kVA ) Dimensions (mm ) Applicable holder
(kV ) (A ) (kA ) (A ) Single phase Three phase Three phase A B C DLFL - 3/6G - 5
3.6 (7.2 )
5
40 5In
- ※ ( up to 5 ) up to 5 ※ ( up to 15 ) - ※ ( - )
261 50 47 25 LFH-6G-D60
LFL - 3/6G - 10 10 up to 10 ( up to 15 ) up to 15 ( up to 30 ) up to 10 ( up to 25 )LFL - 3/6G - 20 20 up to 20 ( up to 50 ) up to 30 ( up to 75 ) up to 30 ( up to 50 )LFL - 3/6G - 30 30 up to 30 ( up to 75 ) up to 75 ( up to 150 ) up to 50 ( up to 100 )LFL - 3/6G - 40 40 up to 50 ( up to 100 ) up to 100 ( up to 200 ) up to 75 ( up to 150 )LFL - 3/6G - 50 50 up to 75 ( up to 150 ) up to 150 ( up to 300 ) up to 100 ( up to 200 )LFL - 3/6G - 60 63 - ( - ) - ( - ) - ( - )LFL - 3/6G - 75 75
40 5In
up to 150 ( up to 200 ) up to 200 ( up to 400 ) up to 200 ( up to 400 )
311 60 57 30 LFH-6G-D1HLFL - 3/6G - 100 100 up to 200 ( up to 400 ) up to 375 ( up to 750 ) up to 300 ( up to 600 )LFL - 3G - 150
3.6
150 up to 300 ( - ) up to 500 ( - ) up to 400 ( - )LFL - 3G - 200 200 up to 400 ( - ) up to 750 ( - ) up to 600 ( - )LFL - 3G - 300 300
40 5In
up to 625 ( - ) up to 1,000 ( - ) up to 1,000 ( - )
311 77 73 43 LFH-6G-D2HLFL - 3G - 400 400 up to 750 ( - ) up to 1,500 ( - ) - ( - )LFL - 6G - 150
7.2
150 - ( up to 500 ) - ( up to 1,000 ) - ( up to 800 )LFL - 6G - 200 200 - ( up to 750 ) - ( up to 1,500 ) - ( up to 1,200 )LFL - 6G - 300 300
40 5In- ( up to 1,250 ) - ( up to 2, 000 ) - ( - )
350 110 108 55 LFH-6G-D4HLFL - 6G - 400 400 - ( - ) - ( up to 2,500 ) - ( - )LFL - 3/6G - 5B
3.6 (7.2 )
5
40 4In
4 ~ 8 ( 8 ~ 16 ) 6.7 ~ 14 ( 13 ~ 28 ) up to 9.8 ( up to 9.8 )
195 55 - -
LFH-6G-D1HB
LFL - 3/6G - 10B 10 6 ~ 13 ( 13 ~ 25 ) 11 ~ 22 ( 21 ~ 44 ) 9.8 ~ 12 ( 19 ~ 24 )LFL - 3/6G - 20B 20 15 ~ 31 ( 30 ~ 62 ) 25 ~ 53 ( 51 ~ 107 ) 12 ~ 31 ( 24 ~ 61 )LFL - 3/6G - 30B 30 21 ~ 42 ( 40 ~ 84 ) 35 ~ 73 ( 70 ~ 145 ) 31 ~ 46 ( 61 ~ 92 )LFL - 3/6G - 40B 40 40 ~ 82 ( 80 ~ 165 ) 69 ~ 143 ( 137 ~ 286 ) 46 ~ 64 ( 92 ~ 128 )LFL - 3/6G - 50B 50 49 ~ 102 ( 98 ~ 204 ) 85 ~ 117 ( 170 ~ 354 ) 64 ~ 81 ( 128 ~ 163 )LFL - 3/6G - 60B 63 66 ~ 137 ( 132 ~ 275 ) 114 ~ 238 ( 229 ~ 476 ) 181 ~ 105 ( 163~ 210 )
192 77 - -LFL - 3/6G - 75B 75 68 ~ 165 ( 134 ~ 330 ) 117 ~ 285 ( 233 ~ 571 ) 105 ~ 150 ( 210 ~ 300 )LFL - 3/6G - 100B 100 128 ~ 220 ( 256 ~ 440 ) 222 ~ 381 ( 443 ~ 762 ) 150 ~ 222 ( 300 ~ 445 )LFL - 3/6G - 125B 125
40 4In
151 ~ 275 ( 302 ~ 550 ) 261 ~ 476 ( 522~ 952 ) 222 ~ 275 ( 445~ 550 )
292 77 - - LFH-6G-D2HBLFL - 3G - 160B
3.6160 211 ~ 352 ( - ) 365~610 ( - ) 275 ~ 370 ( - )
LFL - 3G - 200B 200 265 ~ 440 ( - ) 495 ~ 762 ( - ) 370 ~ 550 ( - )LFL - 6G - 160B
7.2160 - ( 425 ~ 704 ) - ( 735 ~1,220 ) - ( 550 ~ 742 )
LFL - 6G - 200B 200 - ( 437 ~ 880 ) - * ( 755 ~1,520 ) - ( 742 ~1,000 )
M typeApplication
Model
Ratedvoltage
Ratedcurrent
Rated interrupting
current
Lowest interrupting
currentTransformer load(kVA) Capacitive
load(kVA) Dimensions(mm) Applicable holder
(kV) (A) (kA) (A) Three phase Three phase A B C DLFL - 3M - 20
3.6
20
40 7In
37 ~ 75 up to 50200 60 58 30 LFH-3M-100LFL - 3M - 50 50 90 ~ 200 up to150
LFL - 3M - 100 100 220 ~ 400 up to 300LFL - 3M - 150 150 450 ~ 630 up to 400
200 77 73 43 LFH-3M-200LFL - 3M - 200 200 710 ~ 800 up to 800LFL - 3M - 300 300 900 ~ 1, 250 up to 1,000
250 87 84 50 LFH-3M-400LFL - 3M - 400 400 1, 500 -LFL - 6M - 20
7.2
20
40 7In
75 ~ 160 up to 100311 60 58 30 LFH-6M-50
LFL - 6M - 50 50 185 ~ 400 up to 300LFL - 6M - 100 100 450 ~ 800 up to 600
350 77 73 43 LFH-6M-200LFL - 6M - 150 150 900 ~ 1, 250 up to 800LFL - 6M - 200 200 1, 500 -
LFL - 6M - 300 300 2, 500 -450 87 84 50 LFH-6M-400
LFL - 6M - 400 400 3, 000 -
35
The lowest operation characteristic of a vacuum contactor(opening characteristic)Operation characteristic ofa vacuum contactorOverload characterictic of a motor
Time/Current characteristic curve of a Fuse
Blow-out characteristic curve of a Fuse
Operation characteristic curve of a Fuse
A : (Operation characteristic of a vacuum contactor, Time/Current characteristic curve of a Fuse)B : (The lowest operation characteristic of a vacuum contactor, Operation characteristic curve of a Fuse )C : ( Inrush current of a motor, Inrush time of a motor )
Inrush time of a motor Full load current of a motor
Rated current of a fuseInrush current of a motor (Locked rotor current)Lowest interrupting current of a fuseRated interrupting current of a vacuum contactorShort-circuit current Rated interrupting current of a fuse
Fuse
Vacuumcontactor
Motor
Time
Current
Coordination Graph
Coordination between fuse and motor circuit
• �Full load current of a motor① ≤ Rated current of a fuse②
• ��Operation characteristic of a vacuum contactorⓑ must lie to the left of ⓒ(Overload characteristic of a motor)
• �Point A must lie to the right of ④ Lowest interrupting current of a fuse.
• �Point B must lie to the left of ⑤ Rated interrupting current of a vacuum contactor.
Note) �The current less than point A can be protected by a vacuum contactor, and the current greater than point B is to be protected by a fuse.
The lowest operation characteristic of a vacuum contactor(opening characteristic)Operation characteristic ofa vacuum contactorOverload characterictic of a motor
Time/Current characteristic curve of a Fuse
Blow-out characteristic curve of a Fuse
Operation characteristic curve of a Fuse
A : (Operation characteristic of a vacuum contactor, Time/Current characteristic curve of a Fuse)B : (The lowest operation characteristic of a vacuum contactor, Operation characteristic curve of a Fuse )C : ( Inrush current of a motor, Inrush time of a motor )
Inrush time of a motor Full load current of a motor
Rated current of a fuseInrush current of a motor (Locked rotor current)Lowest interrupting current of a fuseRated interrupting current of a vacuum contactorShort-circuit current Rated interrupting current of a fuse
Fuse
Vacuumcontactor
Motor
Time
Current
The lowest operation characteristic of a vacuum contactor(opening characteristic)Operation characteristic ofa vacuum contactorOverload characterictic of a motor
Time/Current characteristic curve of a Fuse
Blow-out characteristic curve of a Fuse
Operation characteristic curve of a Fuse
A : (Operation characteristic of a vacuum contactor, Time/Current characteristic curve of a Fuse)B : (The lowest operation characteristic of a vacuum contactor, Operation characteristic curve of a Fuse )C : ( Inrush current of a motor, Inrush time of a motor )
Inrush time of a motor Full load current of a motor
Rated current of a fuseInrush current of a motor (Locked rotor current)Lowest interrupting current of a fuseRated interrupting current of a vacuum contactorShort-circuit current Rated interrupting current of a fuse
Fuse
Vacuumcontactor
Motor
Time
Current
A. Permissible overload current/time of a transformerB. Permissible overload characteristic of a transformer, Operation characteristic curve of a FuseC. inrush current and time at no load of a transformer
Full load current of a transformerThe lowest interrupting current of the secondary circuit breakerPermissible overload current of a transformerRated current of a fuseLowest blow-out current of a fuseLowest interrupting current of a fuseInrush current at no load of a transformerSecondary short-circuit currentRated interrupting current of a secondary circuit breakerPrimary short-circuit currentRated interrupting current of a fuse
Fuse
Transformer
Circuit breakeror low voltage fuse
Characteristic curve of a secondarycircuit breaker or low voltage fuse(Converted into the primary values)
Time
Permissible overloadcharacteristic curve of a transformerTime/Current characteristic curve of a Fuse
Blow-out characteristic curve of a Fuse
Operation characteristic curve of a Fuse
[1]
[2][3]
[4]
[5]
[6]
Current
Coordination between fuse and transformer circuit
When any protection device is not installed in the secondary of a transformer
When a circuit breaker or fuse is installed in the secondary of a transformer
• �Permissible overload current of a transformer (point ③)) must lie to the left of the curve ⓒ(time/current characteristic curve of a Fuse) Full load current of a transformer ① ≤ Rated current of a fuse ④
• �Point C(inrush current and time at no load of a transformer) must lie to the left of the point ⓒ(time/current characteristic curve of a Fuse)
• �Secondary short - circuit current⑧ > Lowest interrupting current of a fuse ⑥
• �Must meet the requirements above mentioned in ①
•� �The characteristic curve of a secondary circuit breaker or low voltage fuse ⓐ must lie to the left of permissible overload characteristic curve of a transformer ⓑ and under the point B
•� �The characteristic curve of a secondary circuit breaker or low voltage fuse ⓐ must lie to the Time/Current characteristic curve of a Fuse and under the Secondary short - circuit current ⑧.
A. Permissible overload current/time of a transformerB. Permissible overload characteristic of a transformer, Operation characteristic curve of a FuseC. inrush current and time at no load of a transformer
Full load current of a transformerThe lowest interrupting current of the secondary circuit breakerPermissible overload current of a transformerRated current of a fuseLowest blow-out current of a fuseLowest interrupting current of a fuseInrush current at no load of a transformerSecondary short-circuit currentRated interrupting current of a secondary circuit breakerPrimary short-circuit currentRated interrupting current of a fuse
Fuse
Transformer
Circuit breakeror low voltage fuse
Characteristic curve of a secondarycircuit breaker or low voltage fuse(Converted into the primary values)
Time
Permissible overloadcharacteristic curve of a transformerTime/Current characteristic curve of a Fuse
Blow-out characteristic curve of a Fuse
Operation characteristic curve of a Fuse
[1]
[2][3]
[4]
[5]
[6]
Current
A. Permissible overload current/time of a transformerB. Permissible overload characteristic of a transformer, Operation characteristic curve of a FuseC. inrush current and time at no load of a transformer
Full load current of a transformerThe lowest interrupting current of the secondary circuit breakerPermissible overload current of a transformerRated current of a fuseLowest blow-out current of a fuseLowest interrupting current of a fuseInrush current at no load of a transformerSecondary short-circuit currentRated interrupting current of a secondary circuit breakerPrimary short-circuit currentRated interrupting current of a fuse
Fuse
Transformer
Circuit breakeror low voltage fuse
Characteristic curve of a secondarycircuit breaker or low voltage fuse(Converted into the primary values)
Time
Permissible overloadcharacteristic curve of a transformerTime/Current characteristic curve of a Fuse
Blow-out characteristic curve of a Fuse
Operation characteristic curve of a Fuse
[1]
[2][3]
[4]
[5]
[6]
Current
※ Coordination in the graph•Zone of [1] : �Protection of primary side from short - circuit by a fuse•Zone of [2] : �Protection of a transformer •Zone of [3] : �Out of the scope of fuse operation •Zone of [4] : ��Interruption is not ensured even though the fuse blows.•Zone of [5] : ��Protection of a transformer is not ensured even though
the fuse interrupts the circuit. •Zone of [3]+[4]+[5] : ��No protection zone of a transformer Circuit
breaker or low voltage fuse required for the transformer protection
36
Operation Curves
DIN Type3.6/7.2kV blowing characteristic 3.6/7.2kV current limiting characteristic
3.6kV blowing characteristic 3.6kV current limiting characteristic
7.2kV blowing characteristic 7.2kV current limiting characteristic
Current ( sym, A )
Ope
ratio
n tim
e(se
c)
Current ( sym, A )
Ope
ratio
n tim
e(se
c)
Current ( sym, A )
Ope
ratio
n tim
e(se
c)
Interrupting current ( sym, kA )
Interrupting current ( sym, kA )
Cur
rent
lim
ited
( pea
k, k
A )
Cur
rent
lim
ited
( pea
k, k
A )
Interrupting current ( sym, kA )
Cur
rent
lim
ited
( pea
k, k
A )
Current ( sym, A )
Ope
ratio
n tim
e(se
c)
Current ( sym, A )
Ope
ratio
n tim
e(se
c)
Current ( sym, A )
Ope
ratio
n tim
e(se
c)
Interrupting current ( sym, kA )
Interrupting current ( sym, kA )
Cur
rent
lim
ited
( pea
k, k
A )
Cur
rent
lim
ited
( pea
k, k
A )
Interrupting current ( sym, kA )
Cur
rent
lim
ited
( pea
k, k
A )
37
Current ( sym, A )
Ope
ratio
n tim
e(se
c)
Current ( sym, A )
Ope
ratio
n tim
e(se
c)
Interrupting current ( sym, kA )
Interrupting current ( sym, kA )
Cur
rent
lim
ited
( pea
k, k
A )
Cur
rent
lim
ited
( pea
k, k
A )
Current ( sym, A )
Ope
ratio
n tim
e(se
c)
Current ( sym, A )
Ope
ratio
n tim
e(se
c)
Current ( sym, A )
Ope
ratio
n tim
e(se
c)
Interrupting current ( sym, kA )
Interrupting current ( sym, kA ) C
urre
nt li
mite
d ( p
eak,
kA
)
Cur
rent
lim
ited
( pea
k, k
A )
Current ( sym, A )
Ope
ratio
n tim
e(se
c)
KS TypeG type fuse(General use)
M type fuse(Motor protection)
3.6/7.2kV blowing characteristic 3.6/7.2kV current limiting characteristic
3.6kV blowing characteristic 7.2kV blowing characteristic
3.6kV, 7.2kV current limiting characteristic
Operation Curves
38
•For your safety, please read user's manual thoroughly before operating.
•Contact the nearest authorized service facility for examination, repair, or adjustment.
•�Please contact qualified service technician when you need maintenance. Do not disassemble or repair by yourself!
•Any maintenance and inspection shall be performed by the personnel having expertise concerned.Safety Instructions
Specifications in this catalog are subject to change without notice due to continuous product development and improvement.
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■ GLOBAL NETWORK
Susol LS Medium Voltage Vacuum Contactors (E) 2014. 12 / (04) 2015. 10 Printed in Korea STAFF2015. 10
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